{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{1}{ccccccc}}
\hline\hline
                    &\multicolumn{7}{c}{1817-1914}                                                             \\
                    &        Mean&          SD&         Min&         p25&         p50&         p75&         Max\\
\hline
$\tau$              &            &            &            &        10.3&        11.0&        14.7&            \\
$ g $               &            &            &            &         7.8&         8.2&         9.1&            \\
$\tau-g$            &            &            &            &         2.2&         2.8&         4.5&            \\
\hline
Observations        &          98&            &            &            &            &            &            \\
\hline\hline
\end{tabular}
}
